Improvement in bed-bottoms



UNITED STATES PATENT OEEICE.

FREDERICK I/V. MITCHELL, OF HUDSON, NET YORK.

IMPROVEMENT IN BED-BOTTOMS.

Specification forming part of Letters Patent No. 208,917, dated October 15, 1878; application filed July 18, 1878.

To all whom it 'may concern Be it known that I, FREDERICK WILLIAM MITCHELL, of Hudson, in the county of Oolnmbia and State of New York, have invented a new and Improved Adjustable Bed-Bottom, of which the following is a specification:

This invention relates to an improved adjustable bed-bottom, which may be made to iit bedsteads of different widths.

The invention consists in the combination of' the bedstead-springs, which are supported on laterally adjustable and separable slats, with adjustable doubled chains that connect the springs, all as is hereinafter more fully described.

In the accompanying drawing, Figure l represents a top View of my improved bed-bottom. Fig. 2 is a detail side view of one of the ad jnstable chains, showing its connection with two springs. Fig. 3 is a vertical transverse section on the line x Fig. l; and Fig. 4 a perspective view of two springs with their supporting-slats and connecting-chains.

Similar letters of reference indicate corresponding parts in all the gures.

The letters A A represent a series of wooden or other parallel slats, which are placed into a bedstead in the customary manner, being snpported at their ends by, but not rigidly connected with, suitable ledges, with which the bedstead is provided.

The slats A are connected at or near their ends by cross-slats a a. (Shown in Fig. l.) I prefer to use near each end two of such crossslats, arranged side by side, and provided with holes at regular distances apart, through which the cross-slats may be connected to the slats A by small screws or other fastening devices. In this way the slats A may be locked at any desired distance from each other.

To the slats A are secured, at preferablyv equal intervals, a series of upwardly-projectin g helical or spiral springs, B, which serve as supports for the bedding. In order to prevent these springs from losing their proper vertical position, and in order to give additional support for the bed, I connect each spring with its opposite or diagonallyopposite spring by a chain, c, as clearly shown in the drawing. These chains should always be taut. It is evident that these chains must be shortened if the slats A are brought nearer together, and lengthened if the slats A are set farther apart. This is accomplished by securely fastening each chain c at one end to one of the springs B, while its other end is doubled around one coil of the diagonally-opposite spring and provided with a snap or other hook, which is hooked into one of the links of the chain in such a manner that the chain is held in the proper stretched condition. Thus, if the slats A are brought nearer together for a narrower bedstead, the chains may be readily shortcned, while they may be readily lengthened for a wider bedstead.

It will be seen that the slats A may be entirely separated from each other by unfastening the hooks of the chains c and removing the transverse strips c c. In this condition the slats maybe readily stored away and sold in any desired number, and the slats of the bed-bottom may be increased or reduced in number ad Zz'bz'tum.

Those springs B which are situated near the ends of the slats A may be attached thereto by small chains d, as shown.

I claim- The combination, in abedbottom, of slats A, adjustable to and from each other and supporting the springs B, and connecting crosschains c, adjustable as to length, as and for the purpose set forth. v

FREDERICK WILLIAM MITCHELL.

Vitnesses T. B. MosHER, J. TURK. 

